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Finding the Fourth Proportional to 52,643.72, 72,648.36 and 28,770.39

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Solution

The fourth proportional to 52,643.72, 72,648.36 and 28,770.39 is: 39,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,643.72 : 72,648.36 = 28,770.39 : x
  2. Step 2: Convert to fraction form
    52,643.72/72,648.36 = 28,770.39/x
  3. Step 3: Cross multiply
    52,643.72x = 72,648.36 × 28,770.39
  4. Step 4: Simplify right side
    52,643.72x = 2,090,121,650.06
  5. Step 5: Solve for x
    x = 2,090,121,650.06/52,643.72
  6. Step 6: Final answer
    x = 39,703.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.